Ip. Vinogradov et K. Wiesemann, CLASSICAL ABSORPTION AND EMISSION-SPECTROSCOPY OF BARRIER DISCHARGES IN N-2 NO AND O-2/NOX MIXTURES/, Plasma sources science & technology, 6(3), 1997, pp. 307-316
By using emission and classical absorption spectroscopy with a continu
um light source we have investigated dielectric barrier discharges in
N-2/NO and O-2/NOx mixtures. The concentrations of NO, NO2, NO3, N2O5,
and O-3 were measured inside the discharge and in the exhaust. In the
discharge space resolved absorption spectroscopy was performed. In di
scharges with high content of NO or NOx electron impact induced dissoc
iation of NO and NO2 turned out to be important. in discharges in pure
nitrogen we found emission from NO and O(S-1). This indicates a surfa
ce reaction of atomic nitrogen with chemisorbed oxygen and desorption
of atomic oxygen. No indication for the presence of physisorbed NO was
detected. A novel method for obtaining the electron distribution func
tion from absolutely measured light intensities was applied and the re
sults compared to solutions of the Boltzmann equation.